The phrase "albeit invisible" is correct and usable in written English.
It can be used to acknowledge a fact or condition that exists, even if it is not visible or apparent.
Example: "The support for the project was strong, albeit invisible to the public eye."
Alternatives: "although unseen" or "even if hidden".
The ability to tweak a soundtrack developed into one of the most pervasive, albeit invisible, effects in the business: looping, the post-production technique by which dialogue is dubbed over footage to pep up a soundtrack suffering from background noise or – as in this clip from Postcards from Edge – a lacklustre on-set performance.
Recently, astronomers announced that data collected on the centaur Chiron as it passed in front of a bright star in 2011 suggest that it may possess a circulating disk of debris -- albeit invisible to Earthlings.
As it turned out, the struggle was that much worse not because I was failing my training in ways I hadn't accounted for, but because I was meeting with real, albeit invisible, resistance.
I think that there is a figure in the picture, albeit an invisible one.
Because there already seems to be a large and forbidding wall, albeit an invisible one, that prevents Latinos, who now make up approximately half of the LA population, from featuring in films about the city.
The root cause, Adorno says, lies in how capitalist relations of production have come to dominate society as a whole, leading to extreme, albeit often invisible, concentrations of wealth and power (ND 189 92).
Apparently, the amount of correct template produced by the 1st round PCR, albeit often invisible during gel analysis, was usually sufficient to give high yields during the 2nd round of amplification using the common adaptamer sequences.
For some, this situation reflects structural violence: a normalized albeit almost invisible state of social injustice inherent in the organization and governance of both public and private institutions [ 5].
Being a Remainer during the referendum, albeit a largely invisible one, she has sought to compensate by sucking up to the Brexiters.
Being a Remainer during the referendum, albeit a mainly invisible one, she needed to reassure her party that she will deliver, which is why she keeps saying: "Brexit means Brexit".
It also at times has the quiet, uncanny mood of a horror movie, albeit one whose monsters are invisible, living inside the souls they menace.
